"I want Vista to be a better OS than it's been promoted to be, but at the same time, I also want OS X to finally receive the public adoption that it deserves. Now is the time for Apple to creatively promote its Macintosh platform with OS X. This is the critical hour, and if Apple is able to take advantage of the uneasy feeling that many have towards Vista, then they could attract an untold amount of new users."

A little over dramatic, no one is uneasy about Vista except businesses (who are always uneasy when new versions of anything comes out) and power users. The "untold" masses haven't even heard about it and are going to buy whatever Best Buy has $299 (hint, its not an Apple).

I would be willing bet most power users play games and like to build their own computer, this rules out a Macintosh.

I would also be willing to bet the majority of businesses are locked into windows because they require some applcation that is not available on a Mac, so they won't switch either.